Frequent Starbucks patrons are undoubtedly familiar with its long-time Pick of the Week promotion. In the past, customers shopping at the national coffee chain for their morning pick-me-up could redeem Pick of the Week cards for a free download of the latest Black Keys, David Gray, or Lana Del Rey single. Starbucks has continually tweaked the promotion over the years, and it is now expanding the offer beyond music to in-app purchases for iOS users, this week featuring brain-training app Lumosity.
Lumosity is a puzzle app that improves....